scripts/run-tests.sh: Use piglit's --ignore-missing

Recently we added a number of chamelium tests to the fast-feedback testlist.

Chemelium is build-optional - requires  `./configure --enable-chamelium`.

To mitigate issue with piglit exiting abruptly due to the (possibly)
missing test binaries, this makes it behave more gracefuly, considering
those as simply "notrun".

Cc: Petri Latvala <petri.latvala@intel.com>
Signed-off-by: Arkadiusz Hiler <arkadiusz.hiler@intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>

scripts/run-tests.sh

@@ -129,7 +129,7 @@ if [ "x$RESUME" != "x" ]; then
 	sudo IGT_TEST_ROOT="$IGT_TEST_ROOT" IGT_CONFIG_PATH="$IGT_CONFIG_PATH" "$PIGLIT" resume "$RESULTS" $NORETRY
 else
 	mkdir -p "$RESULTS"
-	sudo IGT_TEST_ROOT="$IGT_TEST_ROOT" IGT_CONFIG_PATH="$IGT_CONFIG_PATH" "$PIGLIT" run igt -o "$RESULTS" -s $VERBOSE $EXCLUDE $FILTER
+	sudo IGT_TEST_ROOT="$IGT_TEST_ROOT" IGT_CONFIG_PATH="$IGT_CONFIG_PATH" "$PIGLIT" run igt --ignore-missing -o "$RESULTS" -s $VERBOSE $EXCLUDE $FILTER
 fi
 
 if [ "$SUMMARY" == "html" ]; then